.a_demo {
    background-color:#3bb3e0;
    width:150px;
    display:inline-block;
    font-family: Arial, Helvetica, sans-serif;
    font-size:12px;
    text-align:center;
    text-decoration:none;
    color:#fff;
    position:relative;
    margin-top:0;
    padding-bottom:10px;
    padding-top:10px;
    background-image: linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
    background-image: -o-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
    background-image: -moz-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
    background-image: -webkit-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
    background-image: -ms-linear-gradient(bottom, rgb(44,160,202) 0%, rgb(62,184,229) 100%);
    background-image: -webkit-gradient(
            linear,
            left bottom,
            left top,
            color-stop(0, rgb(44,160,202)),
            color-stop(1, rgb(62,184,229))
    );
    -webkit-border-bottom-right-radius: 5px;
    -webkit-border-bottom-left-radius: 5px;
    -moz-border-radius-bottomright: 5px;
    -moz-border-radius-bottomleft: 5px;
    border-bottom-right-radius: 5px;
    border-bottom-left-radius: 5px;
    -webkit-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
    -moz-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
    -o-box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;
    box-shadow: inset 0px 1px 0px #2ab7ec, 0px 5px 0px 0px #156785, 0px 10px 5px #999;



}

.a_demo:active {
    top:0px;
    background-image: linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
    background-image: -o-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
    background-image: -moz-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
    background-image: -webkit-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
    background-image: -ms-linear-gradient(bottom, rgb(62,184,229) 0%, rgb(44,160,202) 100%);
    background-image: -webkit-gradient(
            linear,
            left bottom,
            left top,
            color-stop(0, rgb(62,184,229)),
            color-stop(1, rgb(44,160,202))
    );
    -webkit-box-shadow: inset 0px 4px 1px #0b698b, 0px 2px 0px 0px #156785, 0px 5px 3px #999;
    -moz-box-shadow: inset 0px 4px 1px #0b698b,0px 2px 0px 1px #156785, 0px 5px 3px #999;
    -o-box-shadow:inset 0px 4px 1px #0b698b, 0px 2px 0px 1px #156785, 0px 5px 3px #999;
    box-shadow: inset 0px 4px 1px #0b698b, 0px 2px 0px 0px #156785, 0px 5px 3px #999;
}